Machine for making corrugated paperboard



Feb. 26, 1952 J. AQUILLA MACHINE FOR MAKING CORRUGATED PAPERBOARD 2SHEETSSHEET 1 Filed Aug. 4, 1948 a n ma w V fl fl .1 n c k 0 1.9m V. B

Feb. 26, 1952 J. AQUILLA MACHINE FOR MAKING CORRUGATED PAPERBOARD.

2 SHEETS-SHEET 2 Filed Aug. 4, 1948 IN VEN TOR. flgmilla/ HTTUIFNE 7Patented Feb. 26, 1 952 MACHINE FOR. MAKING CORRUGATED PAPERBOARD JohnAquilla, Brooklyn, N. Y., assignor to- Eagle National Printing and DieCutting Corp., New York, N. Y., a... corporation of New York ApplicationAugust 4, 194j8, ,S erial'No..42,466

(Cl. 154F531):

3 Claims. 1

The present invention relates to machines for producing laminatedproducts and refers particularly to machines for corrugating paper'andapplying facings thereto to produce corrugated aper. board and the'like.

Accordingly, an object of the present inven-- tion is to provide animproved machine of the foregoing type which, is. relatively simple inconstruction and which is economical to manufacture.

Another object, is to provide such a machine having improved means forapplying the corrugations.

Still another object is to provide such corrugating means which arereadily heated at a low cost.

Yet another object is to provide improved means for applying the facingsto the corrugated paper without crushing the same.

A further object is to provide an improved arrangment for centering thecorrugated paper and facings in order to avoid a slitting operation.

Still a further object is to provide a drive for the facing applyingmeans and an independent drive for the corrugating means whereby paperis continuously passed through the heated corrugating means,independently of the operation of the facing applying means andoverheating of the corrugated paper is prevented.

Other and further objects will be obvious upon an understanding of theillustrative embodiment about to be described, or will be indicated inthe appended claims, andvarious advantages not referred to herein willoccur to, one skilled in the,

a t up plo en of they inv tion i practice.

A preferred embodiment of the inventionhas been chosen for purposes ofillustration and description and is shown in the accompanying drawing,forming a part of the specification, wherein:

Figure 1 is a plan view of a machine for making corrugated paper boardin accordance with Figure 5' isan enlarged sectional view taken alongthe line 5-5 on Figure 1, illustrating details of the facing applyingmeans.

Referring to the drawings in detail, and more particularly to Figures 1and 2 thereof, there is shown a machine comprising aframe H) forrotatably supporting a supply roll- H of paper to be corrugated, asupply roll- IZ of paper adapted to provide the upper facing of'thefinished product and a supply roll M of paper adapted to pro vide thelower facing of the finished product; corrugating means generallyindicated by the reference numeral 15; and facing applying meansgenerally indicated by the reference numeral Hi.

The corrugating means I 5 comprises a receptacle I] for containingliquid, such as water or a suitable wetting agent, a transfer roll 19having its lower side submerged in the liquid and supporting the paperto be corrugated to thereby apply liquid to the paper and moistenthesame, a pair of heated corrugating rolls20- about to be described indetail, and drive means including a motor 2i for effecting rotation ofthe corrugating rolls 20.

AS illustrated in Figures 3 and 4, the corrugating rolls 20 eachcomprise a hollow tubular member 22 journalled for rotation in bearings24, a serrated exterior 2.5" between the bearings- 24, and a cylindricalinterior open at its ends. A sprocket 25 is secured to one end of one ofthe rolls. 2]! for receiving a chain 2'! driven by a sprocket 29 rotatedby the motor 2|, and a gear 30 is secured to the. other end of the r01120 which meshes with a similar gear 30 on the other roll*'20 to effectrotation thereof.

"The serrations 25 of the rolls 20 are constructed and; arranged to meshand serveas feed rolls for unrol'l'ing the paper from the supply roll Hwhile forming the corrugations therein.

Preferably, the rolls 20 are heated to provide for better setting of thecorrugations formed in the paper, the formation of which is facilitatedby moistening the same. This is conveniently accomplished by a gasburnercomprising a tube 31" in coaxial relation with the roll 20 andhaving; perforations 32 therein between the bearings 24' for directingflame jets against the interiorof the roll adjacent the corrugatingserrations. Qne end of each of the tubes 3| is capped at 34- and theother endis connected to a gas supply line 35 having a control valve 36therein (Fi ure-2): The openends of the rolls 20 provide for'the supplyof air to attain proper'combustion ofgaseous fuel.

The facing applyingmeans wcomprisesla pairacsze'rsi of receptacles 31and 39 for containing an adhesive substance in liquid form each having atransfer roll 40 partially submerged therein for respectively applyingthe adhesive to the underside of the upper facing and to the undersideof the corrugated paper; and means for passing the facings andcorrugated paper therebetween to cause the facings to be adhered to theintermediate corrugated paper as about to be described.

These last mentioned means are illustrated in Figure and comprise a pairof spaced apart upper rollers 4|, an endless belt or apron 42 extendingabout the rollers 4|, a pair of spaced apart lower rollers 44, and anendless belt or apron 45 extending about the rollers 44, which areadapted to cooperate with an adjacent strand of the belt 42 to feed thecorrugated paperboard therebetween. Each of the rollers 4| is adjacentone of the rollers 44 but is ofiset in the direction of travel of thebelts 42 and 45, for example, the rollers 4| may be somewhat in advanceof the rollers 44. The rollers 4| and 44 are further spaced to provide agreater distance between the belts at adjacent rollers than at portionsintermediate the rollers to thereby eliminate nips between rollers 4|and 44 tending to crush or otherwise deform the corrugations. As will benoted, the belts 42 and 45 serve to unroll the facings from the supplyrolls l2 and I4 while the corrugated paper is drawn over an idler 46(Figure 2) and fed between the facings. While so drawn between thebelts, light, but sufficient pressure is applied by the adjacent beltstrands at portions intermediate their rollers to cause the face ings tobe adhered to the intermediate corrugated paper without crushing of thelatter.

In order to efiect rotation of the belts 42 and 45, a sprocket 41 issecured to one end of one of the rollers 44 for receiving a chain 49driven by a sprocket 50 rotated by a motor 5|, and a gear 52 is securedto the other end of the aforementioned roller which meshes with asimilar gear 52 on the roller 4| adjacent this roller 44.

If desired, the other rollers 4| and 44 may be mounted on the frameforlengthwise movement by slidable supports 54 secured in predeterminedpositions on a slide 55 by bolts 56 to thereby adjust the tension of thebelts 42 and 45.

From the foregoing description it will be noted that the corrugating andfacing applying means are operatedby independent drive means,whereby.--the facing applying means may be shut down temporarily withoutstopping the corrugating means. Should such conditionbe established, thecorrugating means continues to operate and the vpaper will not beoverheated or scorched due to stoppage between the heated rolls 20. Thepaper which has been corrugated is merely permitted to be deposited at apoint between the rolls and the idler 46 and such accumulationof.-excess corrugated paper is used up at the end of a run when thesupply on the roll II is exhausted.

K Heretofore, it has been found necessary, insofar as applicant isaware, to slit the side edges of the facings after the assembly of thefacings and corrugation into a composite or laminated form in order toprovide a balanced arrangement. This slitting operation is required inthe prior art arrangement in view of the fact that the supply rollersthereof are provided with a braking or resistive effort, therebypretensioning the papers. In applicants arrangement, as explainedhereinbefore, the corrugation and facings, as well as the supply rollers|2,- and M, are in a.loose 4 state, so that the papers can be readilyguided laterally and, accordingly centered.

Referring again to Figs. 1 and 2, there are shown lateral guides 60 ofany suitable configuration, such as Z shaped brackets each having a base6|, a. vertical upright 62 and a bentover portion 63, which guides areadapted to be secured to the receptacle 31 in any well known manner forthe upper facing. A similar guide 64, mounted on the receptacle 39, isprovided for the corrugation while guides or flanges 65, provided on afreely rotatable shaft 66, guide the lower facing. With the three guides60, 64, and 65 disposed in predetermined alignment it will be readilyunderstood that the corrugation will be guided substantially midwaybetween the edges of the facings, thereby eliminating the slittingoperation.

It will be seen that the present invention provides an improved machinefor making corrugated paper board which embodies novel features ofconstruction resulting in improved operation and the production of abetter product.

As various changes may be made in the form, construction and arrangementof the parts herein, without departing from the spirit and scope ofthe'invention and without sacrificing any of its advantages, it is to beunderstood that all matters herein are to be interpreted as illustrativeand not in any limiting sense.

I claim:

1. In a machine for making corrugated paper board, the combination of apair of rollers, an endless belt extending about said rollers, a secondpair of rollers, and an endless belt extending about said second pair ofrollers constructed and arranged to cooperate with said first belt tofeed corrugated paper board therebetween, said belts bein'g supportedonly by their respective rollers, both of said rollers of said firstpair being respectively adjacent both of said rollers of-said secondpair and being oifsetin the direction of travel of said belts to providea greater distance between said belts at adjacent rollers than betweensaid belts at portions intermediate their respective rollers to therebyeliminate nips at adjacent rollers tending to crush the corrugated paperboard, the axes of said rollers being so disposed that the bottomperipheral surfaces of said first pair of rollers fall below the topperipheral surfaces of said second pair of rollers and thereby impart apredetermined'pressure'to said paper board.

2. In a machine'for making corrugated paper board, the combination of apair of lower rollers,

an endless belt extending about said rollers, a pair of upper rollers,and an endless belt extending about said rollers constructed andarranged to cooperate with said first belt to join at an entrancebetween said belts apair of facings to a cardboard sheet to form acorrugated paper board and to feed the corrugated paper boardtherebetween, said belts being supported only by their respectiverollers, said upper rollers being each adjacent one of said lowerrollers and being spaced forwardly with respect thereto to eliminatenips at adjacent rollers tending to crush the corrugated paper board,the axes of said rollers being so disposed that the bottom peripheralsurfaces of said upper rollers fall below the top peripheral surfaces ofsaid lower rollersv and thereby impart a predetermined pressure to saidpaper board. 3. In a machine for making laminated products, thecombination of a pair of endwise ofi'set endless belts each having astrand thereof adjacent the other and adapted to contact same, meansincluding a pair of rollers for each endless belt for moving said beltsto cause said adjacent strands to move in the same direction, means forfeeding a pair of separated sheets between said strands, means forfeeding a third sheet between said pair of sheets, means including aZ-shaped bracket at each side of said sheets for guiding said threesheets in balanced, lateral alignment with respect to each other, meansfor applying adhesive to said third sheet and one of said pair of sheetsprior to feeding said sheets to said belts, whereby said belts causesaid sheets to be adhered while passing therethrough, the axes of eachpair of said rollers being so disposed that the bottom peripheralsurfaces of one of said pairs of rollers fall below the top peripheralsurfaces of the other pair of rollers and thereby impart a predeterminedpressure to said sheets and means for adjusting the contact pressure ofsaid belts.

JOHN AQUILLA.

REFERENCES CITED The following references are of record in the file ofthis patent:

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